import mongoose from 'mongoose';

async function test() {
  // Schema
  const userSchema = new mongoose.Schema({
    name: {
      type: Array,
      required: true
    },
    email: {
      type: String,
      required: true
    }
  });
  // {versionKey: false}

  await mongoose.connect('mongodb://10.21.210.79:27017/test22?authSource=admin&directConnection=true');

  const User = mongoose.model('User', userSchema);
  const user1 = new User({ name: ['123'], email: '12314' });
  await user1.save();

  const user = await User.findOne({ _id: user1._id });
  if (!user) {
    console.log('no user');
    return;
  }
  //  must add this
  // db __v +1 but model don't add 1
  user.markModified('name');
  const n = await User.bulkSave([user]);
  //  must

  // user.name.push("123")
  // user.markModified("name")
  // let b = await User.bulkSave([user])
  //
  // console.log('db save b:', b);
  user.email = '1375';
  user.markModified('email');
  const c = await User.bulkSave([user]);
  console.log('db save c:', c);
  // no change
}